Dementieva is a notoriously bad server, and her worst serve is a slice second serve that gets crushed regularly. Dementieva's problem, to my untrained eye, is that she gets no arch in her back, so all she can hit is a flat serve or the slice. The best servers, like Becker or Federer, get a huge amount of arch in their whole bodies, but especially the back. Dementieva though looks so tight out there, and he body is so rigid, that I don't think she can arch her back like that. And she seems to be squeezing her racket so tight that she's trying to choke it. Girl needs to loosen up a bit . . .